103018
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For more information, visit www.desatech.com
For more information, visit www.desatech.com
OPERATION
To Restart Heater
STORAGE
MAINTENANCE
SERVICE PROCEDURE
Cleaning Fan
TO RESTART HEATER
If safety control stops gas flow to heater, motor will continue to run.
To restart heater:
1. Turn on/off switch to the OFF position.
2. Wait ten seconds, then turn on/off switch to the ON position.
If heater does not restart
• Check manual valves (if any) and supply valves (on propane/LP
tank). Make sure they are open.
• Check fuel level in propane/LP tank(s). If fuel level is too low,
contact local propane/LP gas company.
If heater still does not restart, contact your local service center.
OPERATION
Continued
1. Store propane/LP tank(s) in safe manner. See chapter 5 of Stan-
dard for Storage and Handling of Liquefied Petroleum Gases,
ANSI/NFPA 58 and the Propane Installation Code CAN/CGA
B149.2. Follow all local codes.
2. Place plastic cover caps over brass fittings on inlet connector
and hose/regulator assembly.
3. Store in dry, clean, and safe place. Do not store hose/regulator
assembly inside heater combustion chamber.
4. When taking heater out of storage, always check inside of
heater. Insects and small animals may place foreign objects in
heater. Keep inside of heater free from combustible and for-
eign objects.
1. Keep heater clean. Clean heater annually or as needed to re-
move dust and debris. If heater is dirty or dusty, clean heater
with a damp cloth.
2. Inspect heater before each use. Check connections for leaks.
Apply mixture of liquid soap and water to connections. Bubbles
forming show a leak. Correct all leaks at once.
3. Inspect hose/regulator assembly before each use. If hose is
highly worn or cut, replace.
4. Have heater inspected yearly by a qualified service agency.
5. Keep inside of heater free from combustible and foreign objects.
WARNING: Never service heater while it is plugged
in, connected to propane supply, operating, or hot.
Severe burns and electrical shock can occur.
CAUTION: Disconnect heater from propane/LP
supply tank(s).
STORAGE
MAINTENANCE
SERVICE PROCEDURE
CLEANING FAN
Clean fan every 500 hours of operation or as needed.
1. Remove screws on side cover using 5/16" nut-driver.
2. Remove side cover.
3. Detach the five motor wires from parts under heater shell. Be
sure to detach only wires coming from motor.
The five motor wires are:
• white wire—to terminal board
• black wire—to terminal board
• blue wire—to thermal switch wire
• orange wire—to solenoid valve
• green wire—to grounding screw on shell
4. Remove fan guard from rear of heater.
5. Reach into rear of heater shell. Carefully pull motor wires
through hole in bottom of shell.
Note:
Pull wires through hole
one at a time.
6. Remove nuts and mounting bolts holding motor mount to shell.
Use 3/8" nut-driver and 7/16" wrench.
7. Carefully pull motor and fan out of shell.
IMPORTANT:
Be
careful not to damage fan. Do not set motor and fan down with
the weight resting on fan. This could damage fan pitch.
WARNING: Never service heater while it is plugged
in, connected to propane supply, operating, or hot.
Severe burns and electrical shock can occur.
Figure 7 - Location of Fan and Motor
Motor Wires
Mounting
Bolts
Motor Mount
Terminal
Board
Figure 6 - Location of Motor Wires
Grounding Screw
Thermal
Switch Wire
Solenoid
Valve
